Apparatus for drawing and twisting slivers and the like



New. 13, 11923. 1,474,131

T. ZACHARIADIS APPARATUS FOR DRAWING AND TWISTING SLIVERS AND THE LIKE Filed May 12, 1925 2 Sheets-Sheet 1 Irm/erzfibor" T Zach/a1 fan 2 s iit@.

Nov. 13, 1923. 11,474,131

- T. ZACHARIADIS APPARATUS FOR DRAWING AND TWISTING SLIVERS AND THE LIKE Fileli May 12, 1925 2 Sheets-Sheet 2 Invemi or u I I T Zachar' Imam Federated Nov. 13, 1923.

THEOPHILOS ZACHARIADIS, OF LONDON, ENGLAND.

APPARATUS FOR DRAWING AND TWISTING SLIVERS AND THE LIKE.

Application filed May 12,

To all whom it may oncern:

Be it known that I, THEorHILos ZAOHA- nmnrs, a subject of the King of Greece, and residing at London, England, have invented certain new and useful Improvements in and Relating to Apparatus for Drawing and Twisting Slivers and the like, of which the following is a specification.

This invention relates to machinery for the preparation of yarn for subsequent spinning in a spinning frame and has for its object the provision of a machine or series of machines which will accept a loose bundle of fibres, such as a sliver, and deliver a yarn of any desired size suitable for the spinning mill, such machine being entirely automatic and continuous in action, the material to be treated being completely covered in during the process and demanding no manual attention.

The invention mainly consists in the proi i of apparatus for automatically and continuously reducing the cross-sectional area of a sliver or roving consisting of a bundle of fibres to any desired degree, and at the same time imparting to such sliver or roving any desired degree of temporary twist.

The invention also consists in apparatus as hereinafter indicated.

The following is an example of a machine constructed according to the invention.

In the accompanying drawings Figure 1 is a sectional view of the machine on the line l-1 of Figure 2;

Figure 2 is a sectional view of the machine in an axial plane at right angles to the axes of the rollers;

Figure 3 is a cross-sectional view on line 2-2 of Figure 2.

Fig. i is a diagrammatic view showing a plurality of machines connected together.

The same figures refer to the same parts in each View.

Each machine includes two pairs of roll ers -1 and 2, 3 and 4 arranged, as shown, with their centres at the corners of a parellelogram; the members 1 and 2 of one pair of rollers rotate in opposite directions at equal speeds, while the members 3 and 4 of the other pair also rotate in opposite directions at equal speeds, but slower than the speed of the rollers 1 and 2. The distance 1923. Serial No. 638,515.

between the pairs is dependent on the length of the individual fibres of the material to be drawn.

The rollers are carried in a frame 13, 14: i and connected together by toothed wheel gearing 5, 6, 7, 8, 9, 10 in such a manner that the corresponding elements 1 and 3 of each pair rotate in the same direction. Two split bearing brackets 11, 12 each carrying one roller of each of the pairs are connected to the frame in such a Way as to urge the two rollers of each pair into mutual contact by means of spring bolts 32.

The frame member 14L has a sector-shaped extension 35 which fits inside the casing 15 and serves as a support for the weight of the frame and rollers.

The frame member 14, together with the rollers and their gearing, is pushed within and connected rigidly by means of spring pins 33 to the interior of a cylindrical boxshaped casing 15 which is adapted to be closed by a lid 16 carrying a tubular shaft 17 at its centre, in such a way that the axes of the rollers are at right angles to the axes X-X of the box. A second tubular shaft 18 which is arranged coaxially with the first tubular shaft, projects through the box end and forms a bearing on which the end 19 of the box-shaped casing can rotate, and is itself arranged to rotate in a further bearins 20, the second bearing 21 for the casing 15 being provided around the first tubular shaft 17. A spur wheel 22, coaxial with the tubular shafts 17, 18, i attached rigidly to the end of the casing nearest the second tubular shaft 18, and a second spur wheel 23 is attached rigidly to the second tubular shaft. These two spur wheels are adapted to be driven at d'iferent speeds by a common shaft 24 carrying two spur wheels 25 and 26. The second tubular shaft, at its end which enters the box-shaped casing, is connected bv suitable spur and bevel gearing 27, 28, 29, 30, 31, arranged inside the casing to one end of the roller 2. As a con sequence of the differing speeds of the cas ing and the second tubular shaft 18, rotation of the common driving shaft 24.- causes rotation of the casing 15 and the frame 13, let carrying the rollers and also rotation of the rollers about their axes. By suitable selection of the gearing it is clear that any desired ratio between the speed of the rollers ratio as the desired reduction of cross sectional. area of the bundle of fibres, and the arrangement of the roller-centres in a parallelogram, which allows of a larger arc of contact of the fibres on the rollers, provides good security against breakage of the sliver or roving and results in a more uniform draft. During the passage of the sliver or roving through the rollers the casing 15 to-v gether with the rollers rotates about its axis and imparts a twist to the sliver during the drawing process. I

The sliver or roving, guided by a hollow cone 34, subsequently emerges in its reduced and twisted state through the hollow shaft 18. a 'A number of similar machines may be arranged in series in the same axial line and with a-common driving shaft, so that the hollow shaft 18 of one machine enters the hollow shaft 17 of the next machine, and a proportionate reduction and twist of the sliver may be made in each elementary machine until the desired reduction, for instance for the spinning of thread, is completed. It will be noted that the whole preparation and delivery of the yarn to a final spinning machine is carried out automatically, continuously, and Without exposure. Such a machinemay be used for various purposes such as the preparation of fibre for rope, twine and the like.

It is of course understood that more than two pairs of rollers may be arranged in each machine if desired, and the axes of the machines may be arranged horizontally, vertically, or inclined at any suitable angle.

Having now particularly described my indesired degree by simultaneously drawing and temporarily twisting the material acted upon, including a hollow shaft, a frame ar ranged to rotate on said hollow shaft about its longitudinal axis and a plurality of rollers carried in said frame and having parallel axes transverse to the axis of the frame, a

the rollers being geared together in pairs in such a manner-that the corresponding members of each pair rotate in the same direction at diiferent speeds, while the individual members of eachpair rotate in opposite directions at equal speeds, and means for rotating simultaneously all said rollers about their axes and said frame about its longitudinal axis, the plane containing the axes of one'pair of rollers being parallel to the plane containing the axes of the adjoining pair of rollers-and both said planes being inclined to the longitudinal axis o the frame. a r

2. Apparatus as claimed in claim 1011211: acterized by the feature that the frame of its attached gearing and the rollers is enclosedin a cylindrical casing. V 3. Apparatus as claimed in'claim l, in-

cluding a plurality of machines as claimed arranged with their longitudinal axes in 7 line and arranged so that the hollow shat: '7

of one frame connects in a suitable manner with the hollow-shaft of the next frame;

4:. Apparatus including" a plurality of machines as claimed in' claim '1 and a cylindrical casing enclosing the'rollers and the frame with part of the attached gearing, the individual machines being arranged with their axes in line and with the hollow shaft of one machine connecting in a suitable manner with the hollow shaft of the next machine.

name to this specification.

In testimonv whereof I have signed my 

